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دسته بندی:
محیط زیست - environment
سال انتشار:
2020
عنوان انگلیسی مقاله:
A laboratory approach to CO2 and CO emission factors from underground coal fires
ترجمه فارسی عنوان مقاله:
رویکرد آزمایشگاهی به عوامل انتشار CO2 و CO از آتش سوزی زغال سنگ زیرزمینی
منبع:
Sciencedirect - Elsevier - International Journal of Coal Geology, 219 (2020) 103382: doi:10:1016/j:coal:2019:103382
نویسنده:
Zeyang Songa,b,⁎, Xinyan Huangc, Juncheng Jianga,b,d, Xuhai Pana
چکیده انگلیسی:
Carbon emissions from underground coal fires (UCF) have become an emerging research topic and their role in
global climate warming has been widely debated. Currently, one big uncertainty for assessing UCFs carbon
emission is the hypothesized carbon emission factors (EF) from the complete combustion of coal, while the EF of
smoldering combustion of coal in the context of UCF is still unknown yet. In this work, a 1/20 scale laboratory
experimental framework was proposed to characterize transient carbon emissions and quantify EFCO2 and EFCO.
Effects of fire depth, ventilation area (aperture size), and coal rank on carbon emissions were explored with the
extrapolation to the full-scale UCF. Results showed that total carbon emissions increase with the carbon content
of coal. Volatile content is an important factor impacting the burning behavior and gas emission. Stable EFCO2
and EFCO of UCF, independent of the fire depth and aperture size, were estimated as 2006 ± 36 g kg−1 and
345 ± 132 g kg−1, respectively; its combustion efficiency was 85% ± 3%. The extrapolation of experimental
data estimates the CO2 emission of coal fires in China and the USA as 2.34 × 107–4.61 × 107 t yr−1, which
accounted for 0.4% - 0.9% of total CO2 emissions in the world in 2016.
Keywords: Greenhouse gas (CO2) | Carbon monoxide (CO) | Incomplete combustion | Smoldering fires
قیمت: رایگان
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